Tri-plane antenna



FIG. 1 is a front perspective view of a tri-plane antenna depicting mynew design;

FIG. 2 is a right-side elevation view of the tri-plane antenna of FIG.1;

FIG. 3 is a front elevation view of the tri-plane antenna of FIG. 1;

FIG. 4 is a top plan view of the tri-plane antenna of FIG. 1;

FIG. 5 is a bottom plan view of the tri-plane antenna of FIG. 1;

FIG. 6 is a rear elevation view of the tri-plane antenna of FIG. 1; and,

FIG. 7 is a left-side elevation view of the tri-plane antenna of FIG. 1.

The stippling in the figures indicates a contrasting material.

I claim the ornamental design for a tri-plane antenna, as shown.